CN109962523A - Power supply circuit and power supply unit - Google Patents
Power supply circuit and power supply unit Download PDFInfo
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- CN109962523A CN109962523A CN201910317598.XA CN201910317598A CN109962523A CN 109962523 A CN109962523 A CN 109962523A CN 201910317598 A CN201910317598 A CN 201910317598A CN 109962523 A CN109962523 A CN 109962523A
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- 230000005611 electricity Effects 0.000 claims description 14
- 238000012360 testing method Methods 0.000 claims description 11
- 230000003139 buffering effect Effects 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 claims 1
- 230000001052 transient effect Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 4
- 238000005286 illumination Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a kind of power supply circuit and power supply unit, including charging circuit, booster circuit and buffer circuit, charging circuit is connect by booster circuit with buffer circuit, and the output end of buffer circuit with distribution power automation terminal for connecting；Buffer circuit includes buffer battery group and buffer condenser, and the output end of booster circuit is connect with the anode of buffer battery group, and for the cathode of buffer battery group for being grounded, the output end of booster circuit also passes through buffer condenser for being grounded.The output end output voltage of charging circuit, this voltage increases voltage value by booster circuit, the voltage of booster circuit output is that buffer battery group and buffer condenser charge, the output end of buffer battery group provides stable operating voltage, and buffer condenser needs to discharge after the filling, transient high-current is provided when electric discharge, to realize the distant control function of switch division of the power supply unit to switchgear.
Description
Technical field
The present invention relates to direct current supply fields, more particularly to a kind of power supply circuit and power supply unit.
Background technique
It in general power distribution room other than 10kV switchgear, needs to use low-voltage equipment there are also some, comprising: illumination is set
Standby, Moisture-proof lamp, mouse driving device, exhaust fan, distribution power automation terminal etc..Above-mentioned low-voltage equipment is needed using photovoltaic power taking technology
Solve the problems, such as to take electric, distribution power automation terminal especially therein can not only provide illumination for distribution power automation terminal, may be used also
To meet the remote control of distribution power automation terminal, the acquisition of telemetered signal, distant control function master of the distribution power automation terminal to switchgear
To be the switch division of switchgear, need to provide stable operating voltage, i.e. distribution power automation terminal for distribution power automation terminal
Need larger current.
But distribution power automation terminal depends photovoltaic power taking technology alone and can not provide stable operating voltage, i.e., can not provide
Larger current, to cannot achieve the distant control function to switchgear.
Summary of the invention
Based on this, it is necessary to provide a kind of power supply circuit for exporting stable operating voltage and larger current.
A kind of power supply circuit, comprising: charging circuit, booster circuit and buffer circuit, the charging circuit pass through described
Booster circuit is connect with the buffer circuit, and the output end of the buffer circuit with distribution power automation terminal for connecting；It is described
Buffer circuit includes buffer battery group and buffer condenser, and the output end of the booster circuit and the buffer battery group are just
Pole connection, for the cathode of the buffer battery group for being grounded, the output end of the booster circuit is also connected with the buffer condenser
And for being grounded by the buffer condenser.
The buffer circuit further includes detector and controller in one of the embodiments, the booster circuit
Output end is connect by the controller with the buffer condenser, and the output end of the booster circuit also passes through the detector
It is connect with the controller.
The charging circuit includes photovoltaic panel and supplying cell group in one of the embodiments, the photovoltaic panel it is defeated
Outlet is connect with the anode of the supplying cell group, and the cathode of the supplying cell group is used to be grounded, the supplying cell group
Anode is also connect with the input terminal of the booster circuit.
The power supply circuit further includes cell voltage display in one of the embodiments, the supplying cell group
Anode connects the cell voltage display and for being grounded by the cell voltage display.One embodiment wherein
In, the charging circuit further includes voltage detecting circuit and charge controller, and the output end of the photovoltaic panel passes through the charging
Controller is connect with the anode of the supplying cell group, and the control terminal of the voltage detecting circuit is first with the charge controller
The connection of beginningization end, the test side of the voltage detecting circuit are connect with the anode of the supplying cell group.
The charge controller includes high current controller and floating charge controller, the light in one of the embodiments,
The output end for lying prostrate plate is connect by the high current controller with the anode of the supplying cell group, the output end of the photovoltaic panel
Also connect by the anode of the floating charge controller and the supplying cell group, the first control terminal of the voltage detecting circuit and
The initialization end of the high current controller connects, the second control terminal of the voltage detecting circuit and the floating charge controller
Initialize end connection.
The power supply circuit further includes over-discharge protection circuit in one of the embodiments, the supplying cell group
Anode is connect by the over-discharge protection circuit with the input terminal of the booster circuit, the third control of the voltage detecting circuit
End processed is connect with the initialization end of the over-discharge protection circuit.
The power supply circuit further includes LED light in one of the embodiments, the output end of the over-discharge protection circuit
End connects the LED light and for being grounded by the LED light.
The booster circuit includes at least two sub- booster circuits being connected in parallel in one of the embodiments,.
A kind of power supply unit, including any of the above-described power supply circuit as described in the examples.
Above-mentioned power supply circuit and power supply unit, the output end output voltage of charging circuit, this voltage pass through booster circuit
So that voltage value increases, the voltage of booster circuit output is that buffer battery group and buffer condenser charge, buffer battery group it is defeated
Outlet provides stable operating voltage, and buffer condenser needs to discharge after the filling, and when electric discharge provides transient high-current, from
And realize the distant control function of switch division of the power supply unit to switchgear.
Detailed description of the invention
Fig. 1 is the circuit diagram of the power supply circuit of an embodiment；
Fig. 2 is the circuit diagram of the power supply circuit of another embodiment.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give better embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being set to " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
The present invention relates to a kind of power supply circuits.For example, the power supply circuit includes: charging circuit, booster circuit and delays
Circuit is rushed, the charging circuit is connect by the booster circuit with the buffer circuit, and the output end of the buffer circuit is used
It is connect in distribution power automation terminal；The buffer circuit includes buffer battery group and buffer condenser, the booster circuit
The anode of output end and the buffer battery group connect, the cathode of the buffer battery group is used to be grounded, the booster circuit
Output end be also connected with the buffer condenser and be grounded by the buffer condenser.Above-mentioned power supply circuit, charging circuit
Output end output voltage, this voltage increase voltage value by booster circuit, and the voltage of booster circuit output is buffering electricity
Pond group and buffer condenser charging, the output end of buffer battery group provides stable operating voltage, and buffer condenser is being full of
It needs to discharge later, when electric discharge provides biggish electric current, to realize the distant control function of the switch division to switchgear.
Referring to Fig. 1, its circuit diagram for the power supply circuit of one embodiment of the invention.
A kind of power supply circuit 10, comprising: charging circuit 100, booster circuit 200 and buffer circuit 300, the charging electricity
Road 100 is connect by the booster circuit 200 with the buffer circuit 300, the output end B of the buffer circuit 300 for
Distribution power automation terminal connection；The buffer circuit 300 includes buffer battery group S1 and buffer condenser C1, the boosting electricity
The output end on road 200 is connect with the anode of the buffer battery group S1, and the cathode of the buffer battery group S1 is described for being grounded
The output end of booster circuit 200 is also connected with the buffer condenser C1 and for being grounded by the buffer condenser C1.
Above-mentioned power supply circuit, the output end output voltage of the charging circuit 100, this voltage pass through the booster circuit
200 increase voltage value, and the voltage that the booster circuit 200 exports is the buffer battery group S1 and the buffer condenser
C1 charging, the output end of the buffer battery group S1 provides stable operating voltage, and the buffer condenser C1 is being full of it
After need to discharge, when electric discharge, provides transient high-current, to realize the distant control function of the switch division to switchgear.
For the ease of providing stable output voltage, referring to Fig. 1, the buffer circuit 300 further include detector D1 with
And controller D2, the output end of the booster circuit 200 is connect by the controller D2 with the buffer condenser C1, described
The output end of booster circuit 200 also passes through the detector D1 and connect with the controller D2.The controller D2 is for controlling
The charging of the buffer condenser C1, i.e., when the buffer condenser C1 charges to given voltage value, the controller D2 control
The voltage and electric current of the power supply circuit output are made, and the detector D1 is for detecting the current of the buffer condenser C1
Voltage, and control the conducting and disconnection of the controller D2.In one embodiment, the controller D2 include triode and
The output end of the switch of setting connected in parallel, the booster circuit 200 is connect with the collector of the triode, the triode
Emitter by the buffer condenser C1 be grounded, the output end of the booster circuit 200 also pass through the detector D1 with
The base stage of the triode connects, and one end of the switch is connect with the collector of the triode, the other end of the switch
It is connect with the emitter of the triode.When the power supply circuit deactivates or stores, i.e., the described power supply circuit is in and does not supply
The output end of electricity condition namely the power supply circuit does not export electric current, two pole tensions of the buffer condenser C1 close to zero,
The quantity of electric charge in the i.e. described buffer condenser C1 discharges substantially to be finished namely the buffer condenser C1 completes discharge operation.
And power-on servicing is carried out at this moment, if the buffer battery group S1 will without the detector D1 and controller D2
It charges for the buffer condenser C1, so that the energy in the buffer battery group S1 is reduced, so that power supply electricity is defeated
Operating voltage out is unstable, and the portion of electrical current of the buffer battery group S1 accesses the booster circuit 200, so that described
Booster circuit 200 receives the impact of reverse current, or even burns out the booster circuit 200.In order to avoid above situation, the inspection
The wherein one end for surveying device D1 is connect by the triode with the buffer condenser C1, to obtain the buffer condenser C1
Current voltage value, when the detector D1 detects the voltage value of the buffer condenser C1 near or equal to zero,
Setting booting constant current carries out constant-current charge to the buffer condenser C1, for example, constant-current charge electric current is 0.8~1.2 ampere；Again
Such as, constant-current charge electric current is 1 ampere.It persistently charges to the buffer condenser C1, until by the buffer condenser C1
Voltage increase to designated value, for example, the voltage of the buffer condenser C1 is 48 volts, in this way, the detector D1 is controlled
It is closed the switch described in the controller D2, so that the voltage at the both ends the buffer condenser C1 and the power supply circuit export
Voltage it is identical so that the power supply circuit output stable operating voltage, opened moreover, avoiding the power supply circuit
To the damage of the buffer battery group S1 and the booster circuit 200 when machine, so improve the buffer battery group S1 and
The service life of the booster circuit 200.
In one embodiment, referring to Fig. 1, the charging circuit 100 includes photovoltaic panel PV1 and supplying cell group S2, it is described
The output end of photovoltaic panel PV1 is connect with the anode of the supplying cell group S2, and the cathode of the supplying cell group S2 is used to be grounded,
The anode of the supplying cell group S2 is also connect with the input terminal of the booster circuit 200.In one embodiment, the power supply electricity
Pond group S2 is multiple batteries composition, and the photovoltaic panel PV1 is supplying cell group S2 power supply, i.e., the described photovoltaic panel PV1 is
The supplying cell group S2 charging namely the photovoltaic panel PV1 convert the solar into electric energy and are stored in the supplying cell group
In S2, the supplying cell group S2 is that the booster circuit 200 provides voltage, is boosted convenient for the booster circuit 200, from
And specified operating voltage is provided for the power supply circuit.In the present embodiment, the photovoltaic panel PV1 includes four pieces of battery capacities
For the solar panels of 300W/38V.
For the ease of charging to supplying cell group, referring to Fig. 1, the charging circuit 100 further includes voltage detecting circuit
BG1 and charge controller, the output end of the photovoltaic panel PV1 by the charge controller and the supplying cell group S2 just
Pole connection, the control terminal of the voltage detecting circuit BG1 are connect with the initialization end of the charge controller, the voltage detecting
The test side of circuit BG1 is connect with the anode of the supplying cell group S2.In one embodiment, the charge controller is located at described
Between photovoltaic panel PV1 and the supplying cell group S2, it is the supplying cell that the charge controller, which controls the photovoltaic panel PV1,
Group S2 power supply, i.e., the described charge controller control the charged state of the photovoltaic panel PV1.The voltage detecting circuit BG1 and institute
Electric controller D2 electrical connection is stated, for example, the initialization end of the control terminal of the voltage detecting circuit BG1 and the charge controller
Connection, the voltage detecting circuit BG1 control the charged state of the charge controller, and the charge controller has a variety of fill
Electricity condition, i.e., the described voltage detecting circuit BG1 determine the charge controller according to the supplying cell group S2 different situations
Charged state.The test side of the voltage detecting circuit BG1 is connect with the anode of the supplying cell group S2, due to the power supply
Battery pack S2 is battery, i.e., the voltage of the described supplying cell group S2 gradually rises, according to the current of supplying cell group S2
Voltage, the pressure detection circuit controls the charge controller, thereby executing different charging modes.In this way, the photovoltaic panel
PV1 provides different charging modes for the supplying cell group S2, convenient for the charging to the supplying cell group S2, so that described
Supplying cell group S2 charging is stablized, to improve the charge efficiency of the supplying cell group.
In order to further be convenient for charging to supplying cell group, referring to Fig. 1, the charge controller includes high current control
The output end of device BG2 and floating charge controller BG3, the photovoltaic panel PV1 pass through the high current controller BG2 and power supply electricity
The anode connection of pond group S2, the output end of the photovoltaic panel PV1 also pass through the floating charge controller BG3 and the supplying cell group
The initialization end of the anode connection of S2, the first control terminal of the voltage detecting circuit BG1 and the high current controller BG2 connect
It connects, the second control terminal of the voltage detecting circuit BG1 is connect with the initialization end of the floating charge controller BG3.One embodiment
In, the output end of the photovoltaic panel PV1 is connect with the high current controller BG2 and the floating charge controller BG3 respectively, described
Voltage detecting circuit BG1 control controls the high current controller BG2 and the floating charge controller BG3, the voltage inspection respectively
The voltage signal that slowdown monitoring circuit BG1 is acquired according to its test side, according to the voltage value of the test side of the voltage detecting circuit BG1,
Different charge controllers is selected to charge the supplying cell group S2.For example, working as the inspection of the voltage detecting circuit BG1
When the voltage of survey end detection is less than or equal to the 60%~70% of the supplying cell group S2 maximum voltage value, the voltage inspection
Slowdown monitoring circuit BG1 controls the high current controller BG2, i.e., the described voltage detecting circuit BG1 starts the high current controller
BG2, namely the high current controller BG2 is opened, so that the photovoltaic panel PV1 carries out high current to the supplying cell group S2
Charging；For another example, the voltage detected when the test side of the voltage detecting circuit BG1 is close to the supplying cell group S2 maximum voltage
When value, i.e., the voltage of the test side detection of the described voltage detecting circuit BG1 is greater than the supplying cell group S2 maximum voltage value
70%, the voltage detecting circuit BG1 controls the floating charge controller BG3, i.e., the described voltage detecting circuit BG1 starting is described floating
It fills the controller BG3 namely voltage detecting circuit BG1 and opens the floating charge controller BG3, so that PV1 pairs of the photovoltaic panel
The supplying cell group S2 carries out floating charging, so that the photovoltaic panel PV1 carries out continuous, length to the supplying cell group S2
The constant voltage of time charges, and then guarantees that the photovoltaic panel PV1 stablizes the charging of the supplying cell group S2；For another example, work as institute
When stating the voltage arrival supplying cell group S2 maximum voltage value of the test side detection of voltage detecting circuit BG1, i.e., the described confession
The voltage of electric battery pack S2 charges to load voltage value, and the voltage detecting circuit BG1 controls the floating charge controller BG3, and
Into floating charge state.In this way, the voltage value according to the supplying cell group S2 in charging, selects different charge controllers,
To control the different charging modes of the supplying cell group S2, so that the charging of the supplying cell group S2 is more steady
It is fixed, improve the service life of the supplying cell group S2.
For the ease of protecting supplying cell group, referring to Fig. 2, the power supply circuit further includes over-discharge protection circuit BG4,
The anode of the supplying cell group S2 is connect by the over-discharge protection circuit BG4 with the input terminal of the booster circuit 200,
The third control terminal of the voltage detecting circuit BG1 is connect with the initialization end of the over-discharge protection circuit BG4.One embodiment
In, the over-discharge protection circuit BG4 is as secondary circuit, moreover, the over-discharge protection circuit BG4 and the supplying cell
The anode connection of group S2 avoids the supplying cell so that the over-discharge protection circuit BG4 protects the supplying cell group S2
Group S2 damage, especially as the photovoltaic panel PV1 or the charge controller failure, the over-discharge protection circuit BG4
Over-discharge as the supplying cell group S2 is electrically turn off control.The test side of the voltage detecting circuit BG1 and power supply electricity
The anode connection of pond group S2, i.e., the test side of the described voltage detecting circuit BG1 acquire the electricity of the anode of the supplying cell group S2
Pressure, when the voltage of the anode of the supplying cell group S2 occurs abnormal, since the third of the voltage detecting circuit BG1 controls
End is connect with the initialization end of the over-discharge protection circuit BG4, and the third control terminal of the voltage detecting circuit BG1 sends control
Signal processed is disconnected to the over-discharge protection circuit BG4 to start the initialization end of the over-discharge protection circuit BG4
The over-discharge protection circuit BG4.In the present embodiment, the over-discharge protection circuit BG4 includes relay circuit, when described
When the voltage of the anode of supplying cell group S2 occurs abnormal, the spring leaf of the over-discharge protection circuit BG4 is disconnected, to improve
The service life of the supplying cell group S2.
In one embodiment, the detector D1, the controller D2, voltage detecting circuit BG1, high current controller BG2,
Floating charge controller BG3 and over-discharge protection circuit BG4 is jointly comprised in the power supply circuit, i.e., the described power supply circuit wraps simultaneously
Include the detector D1, the controller D2, voltage detecting circuit BG1, high current controller BG2, floating charge controller BG3 and
Over-discharge protection circuit BG4 ensure that the burning voltage of the buffer battery group S1 and the supplying cell group S2, to protect
The steady operation for having demonstrate,proved the buffer battery group S1 and the supplying cell group S2, improve the buffer battery group S1 and
The service life of the supplying cell group S2.
In one embodiment, the power supply circuit further includes LED light L1, and the output end of the over-discharge protection circuit BG4 connects
Meet the LED light L1 and for being grounded by the LED light L1.The LED light L1 provides illumination, since the power supply circuit is answered
For in electric room, the light environment in electric room to be typically more dim, the light of the LED light L1 transmitting makes the illumination in electric room
Luminance raising, so that the light in electric room illuminates, and then personnel convenient for safeguarding enter electric room maintenance.
In one embodiment, the LED light is connect with the anode of the supplying cell group, and the LED light includes three kinds of colors
LED light, for example, when the supplying cell group anode voltage be less than or equal to the supplying cell group maximum voltage value
60%~70% when, the LED light launches red color light；For another example, when the voltage of the anode of the supplying cell group connects
When the nearly supplying cell group maximum voltage value, i.e., the voltage of the anode of the described supplying cell group is greater than the supplying cell group most
The 70% of big voltage value, and it is less than the maximum voltage value of the supplying cell group, the LED light launches yellow color light；Again
Such as, when the voltage of the supplying cell group reaches the maximum voltage value of the supplying cell group, i.e., the described supplying cell group
Voltage charges to load voltage value, and the LED light launches green color light.In this way, the LED light is by launching different face
The light of color reflects the real-time voltage value of the supplying cell group.
In one embodiment, the power supply circuit further includes cell voltage display U1, the anode of the supplying cell group S2
It connects the cell voltage display U1 and is grounded by the cell voltage display U1.The cell voltage display U1's
Positive to connect with the anode of the supplying cell group S2, the cathode of the cell voltage display U1 is for being grounded, i.e., the described electricity
Cell voltage display U1 is in parallel with the supplying cell group S2, and the cell voltage display U1 obtains the supplying cell in real time
The voltage value of group S2, since the supplying cell group S2 is battery, the voltage value of the supplying cell group S2 is to change always
, so that maintenance personnel obtains voltage value of the supplying cell group S2 in charging by the cell voltage display U1,
Personnel convenient for safeguarding intuitively obtain the voltage value of the supplying cell group S2.
In one embodiment, the booster circuit 200 is used to improve the supplying cell group S2 voltage exported to specified
Value, for example, the voltage of photovoltaic panel PV1 output is 36V, the maximum voltage value of the supplying cell group S2 is 24V, when described
When supplying cell group S2 charges to voltage rating 24V, specified electricity that the booster circuit 200 exports the supplying cell group S2
Pressure is improved, i.e., the input terminal voltage of the described booster circuit 200 is 24V, and the output end voltage of the booster circuit 200 is
48V.Since the booster circuit 200 is that the voltage value of the supplying cell group S2 is promoted to specified output voltage, i.e., by institute
The voltage 24V for stating supplying cell group S2 is promoted to 48V, namely the electric energy of the photovoltaic panel PV1 is first stored in the power supply electricity
Pond group S2 raises voltage to operating voltage required for the power supply circuit by the booster circuit 200 again later.This
Sample avoids the booster circuit 200 directly for work required for the voltage increase to the power supply circuit of the photovoltaic panel PV1
Make voltage, that is, avoids and the photovoltaic panel PV1 output voltage of 36V is directly raised to 48V using the booster circuit 200, then
It is output to buffer battery group S1 described in 48V, to improve the utilization rate of the photovoltaic panel PV1, is avoided in boost process
Kwh loss is avoided the power supply circuit and gives out excessive heat, eliminated and radiated using radiator.
In one embodiment, the booster circuit 200 includes at least two sub- booster circuit V1 being connected in parallel.Due at least
Two sub- booster circuit V1 are arranged in parallel, so that at least two sub- booster circuit V1 are arranged independently of each other.Example
Such as, two sub- booster circuit V1 are arranged in parallel, each described sub- booster circuit V1 can be by the over
The voltage increase of circuit BG4 output is to voltage rating, when one of them sub- booster circuit V1 failure, another sub- booster circuit
V1 carries out boost operations.
In one embodiment, each described sub- booster circuit V1 is in series with a diode D3, i.e., the described sub- booster circuit
The output end of V1 is connect with the anode of the diode D3, the anode of the cathode of the diode D3 and the buffer battery group S1
Connection.In this way, the electric current of the sub- booster circuit V1 output passes through the corresponding diode D3, and to the buffer battery group
S1 charges, and the electric current for avoiding the buffer battery group S1 imports the sub- booster circuit V1, to avoid the sub- liter
Volt circuit V1 damage.
In one embodiment, the cathode of the diode D3 is connected with output voltage display U2, and the output voltage is shown
Device U2 is used to show the output voltage of the booster circuit 200, the output of power supply circuit described in personnel's real-time monitoring convenient for safeguarding
Hold voltage.
The present invention also provides a kind of power supply units, including any of the above-described power supply circuit as described in the examples.
Above-mentioned power supply circuit and power supply unit, the output end output voltage of charging circuit, this voltage pass through booster circuit
So that voltage value increases, the voltage of booster circuit output is that buffer battery group and buffer condenser charge, buffer battery group it is defeated
Outlet provides stable operating voltage, and buffer condenser needs to discharge after the filling, and when electric discharge provides biggish electric current, from
And realize the distant control function of switch division of the power supply unit to switchgear.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of power supply circuit characterized by comprising charging circuit, booster circuit and buffer circuit, the charging circuit
It is connect by the booster circuit with the buffer circuit, the output end of the buffer circuit is used to connect with distribution power automation terminal
It connects；
The buffer circuit includes buffer battery group and buffer condenser, and the output end of the booster circuit and the buffering are electric
The anode connection of pond group, for being grounded, the output end of the booster circuit is also connected with described slow the cathode of the buffer battery group
Rush capacitor and for being grounded by the buffer condenser.
2. power supply circuit according to claim 1, which is characterized in that the buffer circuit further includes detector and control
The output end of device, the booster circuit is connect by the controller with the buffer condenser, the output of the booster circuit
End is also connect by the detector with the controller.
3. power supply circuit according to claim 1, which is characterized in that the charging circuit includes photovoltaic panel and supplying cell
Group, the output end of the photovoltaic panel are connect with the anode of the supplying cell group, and the cathode of the supplying cell group is used to be grounded,
The anode of the supplying cell group is also connect with the input terminal of the booster circuit.
4. power supply circuit according to claim 3, which is characterized in that the power supply circuit further includes that cell voltage is shown
Device, the anode of the supplying cell group connect the cell voltage display and for being connect by the cell voltage display
Ground.
5. power supply circuit according to claim 3, which is characterized in that the charging circuit further include voltage detecting circuit and
The output end of charge controller, the photovoltaic panel is connect by the charge controller with the anode of the supplying cell group, institute
The control terminal for stating voltage detecting circuit is connect with the initialization end of the charge controller, the test side of the voltage detecting circuit
It is connect with the anode of the supplying cell group.
6. power supply circuit according to claim 5, which is characterized in that the charge controller include high current controller and
The output end of floating charge controller, the photovoltaic panel is connect by the high current controller with the anode of the supplying cell group,
The output end of the photovoltaic panel is also connect by the floating charge controller with the anode of the supplying cell group, the voltage detecting
First control terminal of circuit is connect with the initialization end of the high current controller, the second control terminal of the voltage detecting circuit
It is connect with the initialization end of the floating charge controller.
7. power supply circuit according to claim 5, which is characterized in that the power supply circuit further includes over electricity
The anode on road, the supplying cell group is connect by the over-discharge protection circuit with the input terminal of the booster circuit, described
The third control terminal of voltage detecting circuit is connect with the initialization end of the over-discharge protection circuit.
8. power supply circuit according to claim 7, which is characterized in that the power supply circuit further includes LED light, the over-discharge
The output end of electric protection circuit connects the LED light and for being grounded by the LED light.
9. according to claim 1 to power supply circuit described in 8 any one, which is characterized in that the booster circuit includes at least
Two sub- booster circuits being connected in parallel.
10. a kind of power supply unit, which is characterized in that including the power supply circuit as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317598.XA CN109962523A (en) | 2019-04-19 | 2019-04-19 | Power supply circuit and power supply unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317598.XA CN109962523A (en) | 2019-04-19 | 2019-04-19 | Power supply circuit and power supply unit |
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| CN109962523A true CN109962523A (en) | 2019-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910317598.XA Pending CN109962523A (en) | 2019-04-19 | 2019-04-19 | Power supply circuit and power supply unit |
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| Country | Link |
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| CN (1) | CN109962523A (en) |
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| CN200979638Y (en) * | 2006-07-28 | 2007-11-21 | 孙民兴 | A supercapacitive light-emitting diode flashing system |
| CN202513625U (en) * | 2012-03-19 | 2012-10-31 | 深圳市龙威盛电子科技有限公司 | Mobile power supply with battery repair function |
| CN103296725A (en) * | 2013-06-19 | 2013-09-11 | 李洋涛 | Large-current energy storage and release device for bicycles |
| CN105554957A (en) * | 2016-01-29 | 2016-05-04 | 深圳市诚丰浩电子有限公司 | LED lighting emergency integrated lamp and control system |
| CN209767220U (en) * | 2019-04-19 | 2019-12-10 | 广州供电局有限公司 | Power supply circuit and power supply device |
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2019
- 2019-04-19 CN CN201910317598.XA patent/CN109962523A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200979638Y (en) * | 2006-07-28 | 2007-11-21 | 孙民兴 | A supercapacitive light-emitting diode flashing system |
| CN202513625U (en) * | 2012-03-19 | 2012-10-31 | 深圳市龙威盛电子科技有限公司 | Mobile power supply with battery repair function |
| CN103296725A (en) * | 2013-06-19 | 2013-09-11 | 李洋涛 | Large-current energy storage and release device for bicycles |
| CN105554957A (en) * | 2016-01-29 | 2016-05-04 | 深圳市诚丰浩电子有限公司 | LED lighting emergency integrated lamp and control system |
| CN209767220U (en) * | 2019-04-19 | 2019-12-10 | 广州供电局有限公司 | Power supply circuit and power supply device |
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Effective date of registration: 20200921 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant before: GUANGZHOU POWER SUPPLY Co.,Ltd. |